Bay area slang for a homie. Derived from "cutthoat" another bay slang of thizzlamic origin, referring to a thug partner of yours, one thats real in tha game an quick to kill.
cutthoat 1: "sup cuddy?!"
cutthoat 2: "eyyy mayne, lets light up a wood"
cutthoat 1: "yeeeeee! thats wassup"